In a medium bowl combine well the mascarpone and sweetened condensed milk.
In a large bowl beat cream until stiff peaks form. Fold the mascarpone mixture into the whipped cream until well combined.
In a small bowl add the cold coffee, dip the pieces of cake in the coffee (quickly so they aren't soaked and fall apart).
Using freezer safe glasses add a layer of coffee dipped cake (3-4 pieces) and top with 2 or 3 heaping spoonfuls of the ice cream mixture, continue for 2 or 3 more layers (depending on the size of the glasses). Cover with plastic wrap and freeze until firm approximately 3-5 hours or over night. Sprinkle with grated chocolate if desired before serving. Enjoy!
If you find the cake is too frozen to eat you can let the parfait thaw for about 30 minutes in the fridge and then serve or you could make the ice cream in a separate container and make the dessert just before serving.
Notes
The best cake to use is a cake with a dense crumb, such as pound cake or sponge cake. Because you are dipping it in coffee you don’t want it to fall apart. Or if you prefer you can always use cookie pieces such as lady fingers.If you prefer not to use coffee you could substitute the cake or cookie layer with berries such as fresh raspberries, fresh blueberries or even fresh strawberries. You could always add a coffee based liqueur and add it when combining the mascarpone and sweetened condensed milk.If you prefer to use a loaf pan or cake pan rather than make a parfait that is also possible. Place a layer of coffee soaked cake on the bottom, top with half the ice cream, drizzle with melted chocolate then add another layer. Freeze until firm. Top with grated chocolate before serving. This can also be done in the reverse, starting with a layer of ice cream.Any leftover dessert should be stored covered in the freezer. It will keep for up to two weeks.